594 General Notes. [July, 



The maxilla, if I properly recognized it, consists of a small flat 

 basal piece with a rounded subtriangular fiat terminal piece. 



The first pair of pereiopods is provided, near the junction of 

 its basal piece and the prolonged lanceolate lamella, with a con- 

 spicuous large peculiar pigment spot, as seen in Fig. 8. 



The male of our Bopyroides is smaller but higher specialized 

 than that of Bopyrus paiamonetkola. It is always found on the 

 same spot— on the ventral side between the breathing appendages 

 of the pleon of the female. It measures | mm in length, and nearly 

 \ mm in width. It is but sparingly pigmented and therefore very 

 transparent. 



The head is slightly longer than the first segment of the 

 pereion. Two moderately large pigment eyes are situated a little 

 behind the middle of the head. I have examined five individuals 

 and found in every case the anterior pair of antennae larger (three- 

 jointed) than the posterior pair (two-jointed). The oral parts are 

 conical and not very distinct. 



The first thoracic segment is sub-quadrate, the second to sixth 

 segments are equal in length, width and shape, so is the seventh 

 segment, but with a faint lateral emargination. The propodus of 

 the seven pairs of legs (eight in Bopyrus, male) is sub-clu lite with 

 its inferior margin dentate, the dentation not being equally devel- 

 oped in all the legs. 



The pleon, or tail, of the male is narrower than the pcre.on, 



lateral 



i of the 



has six sub-segments, sixth sub-segment 



spine, an indication of which is also found t~ — 



preceding two sub-segments. The spines may be regarded as 



rudimentary pleopods. 



The heart can be distinctly seen in the pleon, also a narrower 

 string extending laterally from the first to the fifth thoracic seg- 

 ment, where an indistinct twist occurs, after which the string is 

 somewhat flatter, reaching down into the seventh segment, where 

 its terminus is obliterated by pigment. The part of this string 

 anterior to the twist, I regard as the testis, while the posterior 

 may be the vas deferens. I did not observe an anastomosis be- 

 tween the two lateral strings, nor have I distinctly seen the ante- 

 rior terminus of the same. An elongate lobe can be noticed in 

 the first sub-segment of the pleon, which Dr. Frit/- Muller also 

 observed in the male of Bopyrus resupinatus} and which is re- 

 garded by him as the liver. — Carl F. Gissler. 



Zoological Notes.— The Bulletin of the U.S. National Museum 

 No. 1 1, is devoted to a Bibliography of the Fishes of the lacin 

 Coast of the United States to the end of the year 1879. ^ 



TheodoreG.il. New birds from the Sandwich Islands, ana* 



new species ( Asio portoricensis ) from Porto Rico, are l ^' ' ;, 

 by Mr. R. Ridgway, in the Proceedings of the U. S. Nat >oru 

 Museum, who also contributes a list of the old world bird 



1 Jenaische Zeitschrift fuer Med. und Naturwis., VI, 1, p. 53. lS 7°- 



