118 THE ENTOMOLOGIST. 



orange hair on inner side ; spurs red ; middle of abdomen with the 

 punctures sparse and small, on the fifth segment minute but close, in 

 abrupt contrast ; hind margins of segments, and edge of basin of 

 first, with conspicuous but very narrow white hair-bands, but no 

 other hair-bands or markings ; sixth dorsal segment dehcately keeled, 

 gradually narrowed apically, and turned up at extreme tip ; last 

 ventral rather narrow, with a very apical part, not extending far 

 beyond dorsal ; sides of last ventral with long but not dense hairs ; 

 ventral segments with strong white marginal hair-bands ; last ventral 

 black or nearly, contrasting with the bright red segment before it. 



Hab. Guapiles, Costa Rica, June 18th, 1903 (J. C. Crawford). 

 U.S. National Museum. This species may be compared with 

 some of those described by Cresson from Mexico, from which it 

 is readily separable as follows : — 

 Last dorsal segment abruptly contracted on each side, the 



apical part much narrower than the basal . . . chichimeca, Cress. 



Last dorsal gradually tapering to apex 1 . 



1. Last dorsal turned upward at tip; last ventral straight 



costaricensis, Ckll. 

 Last dorsal not turned upward at tip ; last ventral strongly 



curved downward ■ totonaca, Cress. 



C. costaricensis is in many ways similar to the South 

 American C. qucerens, Holmbg., to which it runs in Holmberg's 

 table. 



Coelioxys luzoniciis, sp. nov. 



S . Length about 7 mm. ; black, head and thorax above very 

 densely punctured ; head broader than thorax ; mandibles entirely 

 black ; hair on eyes short ; face and front with pale golden hair, and 

 scape beneath with long hair of the same colour ; antennae entirely 

 black ; mesothorax with even posterior middle excessively densely 

 punctured ; cheeks covered with white hair, no hairless area below ; 

 occiput with white hair ; mesothorax with very thin golden-brown 

 hair, only distinct anteriorly ; pleura, tubercles and sides of meta- 

 thorax densely covered with pure white hair ; scutellum dull, very 

 densely rugosopunctate, short, the margin simple, except when looked 

 at from in front, when two very small obscure nodules appear ; 

 axillar teeth short ; tegulas black ; wings dilute fuscous throughout ; 

 b. n. meeting t. m., first r. n. joining second s. m. very near base ; 

 legs entirely black, with white hair ; hair on inner side of hind tarsi 

 orange-fulvous ; spurs fuscous ; abdomen shining, strongly but not 

 densely punctured, the hair-bands pure white ; marginal hair-bands 

 confined to sides, where they form broad patches, on first segment 

 sending a very large lobe basad, and a thin line mesad to near the 

 middle ; subbasal bands developed as small stripes on sides of third 

 segment, but nearly meeting in middle on fourth and fifth ; sixth 

 segment very short and broad, with very small lateral basal teeth 

 (minute ones also on fifth), and six (three pairs) at apex, four above, 

 and two (longer) below ; ventral segments with broad white hair- 

 bands, the first with a median patch of hair extending from base to 

 hind margin, but the margin otherwise bare. 



