PACKARD.] PHYLLOPODS OF NORTH AMERICA. 343 



tlie posterior half of the abdomen. The tips of the 5th endites are edg^ed 

 with reddish. Observed iu very large specimens, from Dorchester, 

 Mass. Jan. 4 to 9, 1882.* 



Beanchipus seekatus (Forbes). 



EubrancMpus sm-ratus Forbes, Bull. Illinois Mus. Nat. Hist. I. 13, Dec. 1876. 



This interesting species is of the size and general appearance of B- 

 vernalis, but the frontal appendages are twice as large and long, reach- 

 ing to the end of the first joint of the male claspers. They are broad 

 and flat; on the middle of the inner and outer edge is an expansion 

 from which arise six digitiform processes, those on the inner edge being- 

 shorter and smaller; the appendages each end in a rolled-up slender 

 tip. Male claspers with the ]st joint short and thick; the 2d 

 joint much shorter and thicker than in B. vernalis^ being one-half as 

 long, thicker in proportion, with the end squarely cut off, and triquetal 

 seen from the end. At the base of the joint is a broad-based stout spur 

 which points inwards. The caudal api)endages are a little shorter and 

 less coarsely setose along the edge than in B. vernalis. The genitals 

 are as in B. vernalis; the ovisac of the female is similar, the opening 

 being the same, while the eggs are of the same size as in that 8i)ecies. 



Total length of male, 15-20"™; length of claspers, 4"""; length of 2d 

 joint, 2""" ; of caudal appendages in both sexes, 2.5-3'"'" ; total length 

 of female, 20""'. 



"Collected in temporary pools of water at ]S"ormal, Illinois, in April, 

 1876 ; about a fortnight afterwards it entirely disappeared." "Another 

 species [specimen] has been sent me by Professor Bundy, by whom it was 

 taken in Wisconsin." I am indebted to Prof. S. A. Forbes for a pair of 

 type specimens of this interesting species, which bears a close resem- 

 blance to, and thus represents in the United States, Branchipus gruhei 

 of Europe; it differs, however, from that species in the rather smaller 

 frontal aj)pendages, which are not so continuously and deeply fringed 



*Tlie following observations by Dr. Gissler, made on the appearance of Branchipus 

 vernalis and Chirocephalus holmani may prove of interest: 



Brooklyn, November 14, 1881. 



I recorded the following in my memorandum last year : Ponds near Maspeth dried 

 np in October, 1880, until October 30, filled up; heavy rain again November 5; heavj^ 

 rain again and G8°F. on November 11; November 18, a thin coat of ice formed in tlio 

 evening; November 19, little rain in afternoon, again cold in evening; November 20, 

 cold; November 21, freezing; ditto November 22, 23, and 24, a little snow at 9 p. m.; 

 25th, snow, cold ; 26th, very cold, and 27th and 28th, thawing after 10 a. m.; same day 

 rain from 10 a. m. till 11 p. m.; 29th, clear and mild ; 30th, frozen ; December 1, rain; 

 2d, mild and clear; 3d, cool and clear; 4th, mild; 5th and 6th, warm; 7th, cold; 8th, 

 9th, 10th, and 11th, very cold; 12th, mild; 13th warmer, and 14th, ditto with rain; De- 

 cember 15, 16, and 17, all ponds solidly frozen; 18th, thawed; 19th, frozen; ditto 20 

 and 21, with snow; frozen, 22, 23, and 24; thawing on 2oth; frozen, 26, 27, 28, and 

 29; December 30, 5° below zero; 31st, cold, frozen; ditto January 1, 2, 3, 4, and 5, 

 1881; milder and muddy on 6th, 7th, and 8th; colder on 9th, rain in the evening; 

 ditto all day on 10th; 11th, went to Maspeth, ice 1 inch thick on isolated pond, water 

 running into it from neighboring elevated fields, nothing found; 12th and ioth cold ; 

 warm rain in A. M. of 14th, cold after 3 p. m., went to Maspeth and obtained one 

 larva, the smallest I ever saw, from pale race; 15th, 17°F. at 9 a. m.; cold 16th, oi»- 

 tained 3 red J5J«6ranc/(ij9Ms larvae a few days old; 16th, cold; 17th mild; ditio 18, 19, 

 and 20, eight inches ice at Maspeth ; 21st, warm rain ; 22d, snowed over night, cold ; 

 23d, cool; 24th, 25th, and 26th, cold; 27th, 28th, 29th, 30th, and 31st, very cold; a 

 larger larva was found February 10, age about 5 days; heavy rains February 18 and 

 19; March 3, obtained from Mas]3eth 4 larvae 3|'"'" long, red EubrancMpus, ice 3 inches; 

 March 6, obtained 17 larvae of the red Enbranchipns between 3-5™"" long, no pale ones 

 seen; March 11, obtained 40 or 42 half-grown red EubrancMpus; March 23, a great 

 nu-mber of adult Chirocephalus found near Gleudale. 



C. F. GISSLER. 



