223 
1966] Whitehead, — Halocoryza 
more closely placed pronotal carinae, and by details of the male 
genitalia. See fig. i. 
Holotype male. “Acapulco, Gro., Mex. Aug. 18, 1938 Lipovsky” 
and “Museum of Comparative Zoology”. To be deposited in the 
Museum of Comparative Zoology, M. C. Z. Type No. 31,168. 
With the characters of the genus; color pale testaceus. Sixth 
frontal carina of head extended unbroken onto frontal lobe. Eyes 
small (WF/WH, 0.80), flat, coarsely faceted, the facets all equal 
in size. Posterior supraorbital seta placed behind and nearly in line 
with the abbreviated fourth frontal carina. Lacinia appearing quadri- 
dentate, the abruptly bent apex preceded in line by three pairs of 
stout crossed setae. Gula at narrowest point approximately 0.48 width 
of mentum. Pronotum slightly transverse (LP/WP, 0.89). Para- 
median and paralateral sulci shallow, inconspicuous. Median sulcus, 
except basally, closely bordered by a pair of weak carinae which are 
convergent both apically and basally; interspace at widest point less 
than 0.10 WP. Anterior transverse impression impunctate. Elytral 
interval three with nine or 10 regularly spaced setigerous punctures 
near midline. Intervals five and seven with six to eight setigerous 
punctures placed near the inner striae. Penultimate tooth of front 
tibia with seta submedian. Tarsi very short (Ta/Ti, 0.56) . Sternum 
two with paramedian carinae poorly developed and inconspicuous. 
Median lobe of male genitalia (fig. 3) with apex strongly produced 
and very acute in lateral view; basal diameter of median lobe 0.55 
ventral length. Internal sac with elongate basal sclerites, otherwise 
lacking distinct sclerites or spines; apical brush large but not heavily 
sclerotized, lacking enlarged seta-like plates dorso-apically. 
Measurements. TL, 1.96 mm. LE, 1.20 mm. WH > 0.42 mm. 
WE, 0.66 mm. LA, 0.41 mm. 
Allotype female. With the same label data as the holotype, to be 
deposited in the Museum of Comparative Zoology. This specimen 
differs in no significant way from the male, except for the genitalia 
(not examined). 
Paratypes. Three males and thirteen females with the same label 
data as the holotype, to be distributed as follows : G. E. Ball ( 1 
female) ; British Museum of Natural History (1 female) ; California 
Academy of Sciences (1 female); Institut Royal des Sciences 
Naturelles de Belgique (1 female) ; Museum of Comparative Zoology 
(2 males, 5 females); Jacques Negre (1 female); United States 
National Museum (1 female); D. R. Whitehead (1 male, 2 fe- 
males) . 
Variation. No important variation except size was observed: LE, 
