66 the entomologist. 



Phymatid^. 



Macrocephalus arizonicus, sp. n. 



(? . Length 8 millim. ; breadth of abdomen 4, of scutellam 2^, 

 length of scutelhim 4, breadth of thorax 3i- milHm. Enth'e insect 

 orange-brown, the colour of dried apricots ; abdomen somewhat redder ; 

 antennae pale, terminal half of last joint bright green ; anterior tibiae 

 blackish ; four hind legs with the coxae, trochanters, and femora 

 blackish with small white warts, tibiae pale yellowish, tarsi darker and 

 greenish. Abdomen broad, heart-shaped, the lateral margins visible 

 nearly to the end of the scutellum ; thorax with the usual lateral 

 angular projections quite large, and the two longitudinal keels distinct, 

 though concolorous with the rest of the surface ; keel on scutellum 

 distinct, reaching the apex, broadened on the basal fifth, but nowhere 

 at all bullate ; sides of scutellum presenting the usual gentle double 

 curve ; upper surface of head and thorax rough, with minute pallid 

 pimples ; hinder part of thorax irregularly and confusedly cancellate ; 

 scutellum distinctly cancellate basally, otherwise rough and sub- 

 cancellate, with innumerable punctures. Antennae with the first joint 

 stout, cylindrical, ,'a little longer than the third ; second short and 

 more or less heart-shaped ; third a little longer and more slender ; 

 fourth large, larger than the second and third together. 



Hah. Tucson, Arizona, in the region of Larrea and Mesquite, 

 Nov. 7th, 1899 {Ckll). Allied to M. prehensilis, Fab., and 

 M. lepidus Stal. The antennae are rather like those of M. pul- 

 chellus, and the colour is nearest to that of M. incequalis. 



Phymata salicis, sp. n. 

 Length 8 to 9 millim.; breadth of abdomen 3|- to 4 millim. 

 Similar in most respects to P. fascUita, Gray, but smaller than that 

 species usually is, and narrower, with the frontal process always 

 longer, so that the lateral profile of the face is quite concave. The 

 hinder lateral angle of the thorax is also less prominent, the margin 

 between the lateral angles being almost or quite straight, instead of 

 concave. The colouration is markedly different from that oi fasciata, 

 being a mixture of very pale yellow and light green, the dark abdominal 

 band merely nebulous, and all the markings suffused. The green 

 becomes quite bright on the middle of the thorax, and on the legs and 

 antennae ; the anterior lateral angles of the thorax are stained with dark 

 fuscous, and the top of the head is in some specimens marked with 

 the same colour. 



Hah. Phcenix, Arizona, numerous {^ ? ) on twigs of Salix 

 Jiuviatilis, preying upon butterflies (Lyccena) and flies (Syritta), 

 Oct. 7th, 1899 {Ckll). This could be considered a race of 

 P. fasciata, but in a long series its characters are perfectly con- 

 stant, and distinct from those seen in fasciata, in the manner 

 described. P. fasciata is a flower-inhabiting species, whereas 

 P. salicis is adapted for life upon the twigs of the willow. 



