NO. 2041. THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 579 



Thorax short, broad; pronotum about half as long as scutellum, 

 not deeply emarginate behind, with about six pits on posterior 

 incline of lateral carinas. Legs rather stout; calcar about half as 

 long as basal tarsus, stout, briefly pubescent. 



Abdomen pitted dorsally irregularly; median line almost carinal 

 in prominence. 



Male pygofers with aperture margin elongate-ovate, with sides 

 protruding a little below middle; anal tube short, with two very long 

 ventral processes; anal style short; genital styles short, simple, 

 largest at base. 



Redescribed from one male and two females from Finland (Renter), 

 determined by the latter as Bitropis albosignata. 



Reported from Buffalo. East Concord, and New York (Van Duzee). 



ACHOROTILE FOVEATA Spooner. 

 Achorotilc foveata Spooner '12:24:1. 



This is very closely related to albosignata, but seems to be distinct 

 in a few minor characters. I have examined the type-specimen, a 

 macropterous female, and believe it to be distinct, although I have 

 seen only two specimens of albosignata and both of those European. 

 More specimens should be compared before a final judgment is made. 

 Spooner says, "This species may be told from A. albosignata by the 

 deeper vertex, the different coloration, and by the presence of four 

 instead of two pustules on each side of the abdominal segments." 

 The latter character in albosignata is not constant, however. 



Locality. — Felton, Santa Cruz Mountains, California; May, 1907. 



Genus LACCOCERA Van Duzee. 



Head large, about as broad as prothorax, more or less angulate 

 dorso-ventrally at apex; vertex relatively quite broad, more or less 

 pentangular or quadrangular, with anterior margin roundly convex; 

 several pits (pustula of some authors) near eyes; frons large, broad, 

 more or less obcordate, narrower below than abov , with median 

 carina forked at apex of head, several pits in each lateral fovea. 

 Pronotum shorter than vertex, deeply excavated behind, with lateral 

 carinse curved outward, and several pits on posterior incline, as in 

 AcJiorotile; scutellum tricarinate, somewhat pitted. Elytra often 

 brachypterous; anterior and middle tibiae slightly flattened. Abdo- 

 men pitted on the sides. 



Tyjye of genus — Laccocera vittipennis Van Duzee. 



The peculiar pitted surface of the head, thorax, and abdomen of 

 this genus and Achorotile has been believed to indicate that these 

 genera are at the bottom of the scale of development, since this same 

 character is common among nymphs. However that may be, the 

 genera in question are very easily distinguished from the others by 



