28 Mr. T. D. A. Cockerell — Descriptions and 



Anterior legs simple ; sixth abdominal segment feebly 

 bitubercnlate, the tubercles very close together. 



Hub. Gualan, Guatemala, five females, eight males ( W. P. 

 Cockerell, 1). The female is the type. 



In Friese's table the female runs to 31. zaptlana and 

 M. abacula, the male runs to M. abacula and M. blpartita. 

 M. gualanensis is, in fact, very close to M. zaptlana, Cress., 

 but the female has less black hair on head and the wings are 

 not fuliginous on apical costal margin. Otherwise Cresson^s 

 description of zaptlana practically agrees. M. abacula, 

 Cress.j differs at once by the fulvo-ochraceous hair on 

 abdomen. Among the United States species, M. (jualanensls 

 stands nearest to M. subexilis, Ckll. The male flagellum is 

 proportionately shorter in gualanensis than in subexilis, and 

 in the female the distance from the top of the eye to the 

 occipital margin is much less in (/ualane?isls iha.n in subexilis. 



Mellssodes raphaelis, Cockerell. 



Quirigua, Guatemala (JV. P. Cockerell). One female at 

 yellow composite, less robust than types. Six normal males 

 (one at flower no. 7 ; two, Feb. 11, at flower no 15; one, 

 Feb. 12, at Ipoma-a sulcefolia, Choisy) ; one male with fulvous 

 hair on head and thorax above, the only dark hairs a few on 

 scutellum; eight variously intermediate males (three, Feb. 11, 

 at flower no. 15 ; one, Feb. 12, at Ipomcea sldcefolia). 



In spite of the great variation all are evidently one species. 

 The lighter-haired male is easily distinguished from M. floris, 

 Ckll., by the deep notch on each side of yellow of clypeus, 

 black hair on outer side of hind tibiae, and colours of 

 abdomen. 



Mellssodes tepaneca aschenhorniana, subsp, n. 



cJ . — Differs from M. tepaneca, Cresson, by having the 

 fifth abdominal segment with pale hair like the fourth, 

 though the sixth has it black ; second segment with black 

 hair between the basal and median band (it is ochreous in 

 tepaneca); median band of second segment narrower ; hair 

 on hind tarsi shorter ; Avings more dusky. It is very like 

 M. masuca, Ckll., from Texas, but smaller, with the second 

 abdominal segment between tlie bands more closely punc- 

 tured and the eyes difi'erently coloured (light green). The 

 middle and hind tibiae at apex and their tarsi are ferrugi- 

 nous ; labrum, large spot on mandibles, and clypeus yellow, 

 the last with the usual spots, but the yellow not notched ; 



