494 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



convex medially, edge thickened laterally; gonostylus as illustrated 

 (fig. 231). 



Length of body: 4.79(4.22-5.21). 



Type data. — StSl's type (Stock) is from Mexico. Walker described 

 nitidulus, parilis, and tenuis from "Belize, [British] Honduras," "Ama- 

 zon Region," and "Orizaba," Mexico, respectively (types in BrM). 

 Signoret described and named sallei from "Laguayra [Venezuela] et 

 Mexique"; petersi from "Perou"; and minimus from "Mexique." 

 Two specimens (Wien) are labeled as types of sallei and minimum 

 respectively. The type of petersi has not been located. 



Specimens studied. — 20 males: 



Mexico: Oaxaca: Tuxtepec; July. 

 Guatemala: Antigua; August. 



Costa Rica: Rfo Virillo, San Jos6, San Pedro, Turrialba; January, June to 

 August. 



Puerto Rico: Ponce. 

 Colombia: Cali. 

 Brazil: Pard. 

 Peru: Pachitea. 



Discussion. — A number of names based on small specimens must 

 be considered here. Walker's three forms (nitidulus, parilis, and 

 tenuis) present a special problem. In kind reply to a request for infor- 

 mation on the types of them. Dr. China reported that all had a single 

 submarginal setigerous puncture on the jugum and one on each costa, 

 and that all were described from a female or male now lacking hind legs. 

 This combination prevents placement of these forms at this time. 

 They appear to fit equally well under piceatus, docilis, or the new 

 species quinquespinosus. However, until further work furnishes char- 

 acters which will permit interpretation of these forms, the author 

 prefers to have the names fixed to a definite concept rather than leave 

 them unattached, and for convenience attaches them here. 



The three Signoret species here assigned to synonymy for the first 

 time were so treated for the following reasons: P. minimus, as deter- 

 mined by a personal study of the type was based on a pale, teneral 

 specimen of piceatus, the light color having prompted Signoret to 

 remark that the pale color contrasted this species with all others in 

 the genus. The situation involving sallei is more complex. Signoret 

 gave Venezuela and Mexico as the type localities for this species. 

 The specimen bearing the Mexican locality label now bears the type 

 label and was kindly lent for study by Dr. Max Beier of the Natur- 

 historisches Museum in Vienna. It disagrees with the original de- 

 scriptions in several important respects: (1) it was said to be similar 

 to piceatus but described and figured as having four submarginal 

 setigerous punctures on each jugum and two to five on the costa- — the 

 type has but one on each part; (2) only five, instead of the described 



