upon the Genus Syrlis of Fahricius. 23 



The species of this genus are exclusively confined to the warmer 

 regions of America, being found from Carolina to Brazil ; they 

 are of small size, never attaining to the length of half an inch. 

 Their colours are generally variegated with buff, luteous, reddish, 

 brown, or black ; the upper surface of the body is generally more 

 or less rugose, and clothed with minute rigid scales. Nothing is 

 recorded of their habits : their motions in all probability, judging 

 from the structure of their legs, are slow and awkward. 



Sp. 1 . Macrocephalus cimicoides, Swederus. (PI. 2, fig. 5 and 5 a.) 



" Griseo-ferrugineus, scutello cinerascente macula coleoptratd 



flava, alis purpurascenti-violaceis, tibiis anticis incrassatis. 

 " Habitat in Georgia America;. Mus. D. Drury. 

 " Descr. — Corpus Cim. eroso L. paulo minus, griseo-ferru- 



gineum. 

 " Caput longitudine fere thoracis, antice emarginatum, subtus 

 canaliculatum, pro rostro lateribus inferioribus serrato-cre- 

 natis. Antennae longitudine capitis, griseo-ferrugineae. 

 Rostrum brunneum, subglabrum, apice subpilosum. Setae fla- 

 vescentes. Thorax antice angustatus, emarginatus, angulis 

 subacutis, postice subrotundatus, lateribus spinosus, spind 

 vitrinque obtusa truncata vix bifida. Lineae 2 dorsales 

 elevatae, obsoletiores, sordide flavescentes. Scutellum apice 

 rotundatum cinerascens, atomis fuscis adspersum, basi nigro- 

 ustulatum, macula oblonga postice subtriloba elevato-cole- 

 optrata, flavissima notatum. Abdomen scutello latius sub- 

 rhombeum integrum, subtus saturatius ferrugineum. Alae 

 purpurascente-violaceae, margine exteriori, ut in Cimicibus, 

 usque ad medium subcoriaceo, griseo-cinereo. Pedes grisei. 

 Tibiae anticae valde incrassatae, subtus dente subacuto, apice 

 ungulo longiori arcuato subulato armaiae." Swederus, Act, 

 Holm. 1787, p. 185, pi. 8, fig. 1, with details from which 

 figures 5 and 5 a are copied. 

 Obs. 1. — Syrtis mankata Fabr. (Syst. Rhyng. p. 123, No. 7) 

 a Latreillio (Gen. Crust, vol. 3, p. 138) eadem cum praecedente 

 habetur. In descriptione Fabriciana insectum coloris grisei 



(" /S*. grisea, scutello linea dorsali baseos alba." — "Thorax 



griseus." — " Scutellum griseum") describitur, cum patria Caro- 

 lina. 



Obs. 2. — Syrtis mankata, Wolff", (Icon. Cimicum, t. 17, f. 1G3. 

 Encycl. Meth. Ins. pi. 374, fig. 7), certe species distincta ; forsan 

 M. affinis, Guer. 



